| 617802 | = | x | + | x | ( | 10 | ÷ | 100 | ) | + | x | ( | 2000 | ÷ | 10000 | ) | + | 393 |
| 方程右边 = | x | + | x | × | 10 | ÷ | 100 | + | x | ( | 2000 | ÷ | 10000 | ) | + | 393 |
| = | x | + | x | × | 1 10 | + | x | ( | 2000 | ÷ | 10000 | ) | + | 393 |
| = | 11 10 | x | + | x | ( | 2000 | ÷ | 10000 | ) | + | 393 |
| = | 11 10 | x | + | x | × | 2000 | ÷ | 10000 | + | 393 |
| = | 11 10 | x | + | x | × | 1 5 | + | 393 |
| = | 13 10 | x | + | 393 |
| 617802 | = | 13 10 | x | + | 393 |
| - | 13 10 | x | = | 393 | − | 617802 |
| - | 13 10 | x | = | - | 617409 |
| 617409 | = | 13 10 | x |
13 10 | x | = | 617409 |
| x | = | 617409 | ÷ | 13 10 |
| = | 617409 | × | 10 13 |
| = | 47493 | × | 10 |
| x | = | 474930 |